Cerebras soars 17% after hours, but its 2027 "triple" lands below Wall Street's $2.92 billion

Cerebras Systems (CBRS) was trading about 17.8% higher after hours, at $115.17 as of 7:31 p.m. Eastern, after reporting third-quarter results, according to Nasdaq. The stock had closed Thursday at $97.75, down 3.3%, for a market value of about $23.2 billion. CNBC reported that core revenue and the fourth-quarter outlook beat analysts' estimates and that the company announced a cloud deal with Microsoft.

The numbers in the release

In its earnings release filed with the SEC, Cerebras reported two sets of figures. The first is GAAP. The second is "core," which excludes non-cash amortization of customer warrants, stock-based compensation, data center pass-through revenues and costs, and certain other items.

The gap is the story behind the headline. Core revenue is $20.1 million higher than GAAP revenue, but the operating margin differs by 92 percentage points. On $210.8 million of GAAP revenue, a minus 106% margin works out to an operating loss of roughly $223 million (our arithmetic, not a figure from the release). The core measure strips most of that out. Both are legitimate disclosures, but only one is what the company reports to the SEC as its results under accounting rules.

The guidance, and the part most headlines skip

For the fourth quarter Cerebras guided to core revenue of $310 million to $330 million and a core gross margin of 47% to 49%. CNBC cites LSEG analyst estimates of $271 million and 42.1%. Against Q3's $230.9 million, the range implies sequential growth of about 34% to 43%. Core growth slowed from 103% a year earlier in Q2 to 70% in Q3, so the fourth-quarter guide implies a re-acceleration in dollars.

The full-year core range is $940 million to $960 million. The release says management expects to "triple revenue in 2027." On the midpoint of $950 million that is $2.85 billion, which CNBC also computes, and below the $2.92 billion LSEG analysts were looking for. So the stock is jumping on a near-term beat and a Microsoft deal while the longest-dated number is slightly under expectations. Headlines saying only "beat and raise" leave that out. Triple is also a company target, not a contract.

Backlog, cash and the Microsoft deal

Cerebras reported $26.1 billion in remaining performance obligations as of Sept. 30 and $7.8 billion in cash, restricted cash and short-term investments, plus $850 million of debt capacity. Remaining performance obligations are contracted revenue not yet recognized, and the release does not say over how many years it will be recognized, so it cannot be compared with a single year's sales. The release also says 700 gross megawatts of data center capacity is secured for delivery by the end of 2027, and names Oracle, which plans to offer Cerebras in its cloud in 2027.

CEO Andrew Feldman told CNBC the Microsoft agreement was signed in October and that revenue "begins to show up" in the first quarter of 2027. He also said the company is evaluating financing options to meet demand, which is worth noting beside a $7.8 billion balance: building cloud capacity at this scale costs a great deal of money.

What traders are watching

The report landed the same day Nvidia's chief executive resigned. Our Nvidia report has that story, and our earlier Cerebras piece covers how far the shares had fallen from the IPO. By Nasdaq's figures the shares were at $97.75 at the close, inside a 52-week range of $77.84 to $386.34, and after-hours trading is thinner and can reverse by the open. Items to watch: how the stock trades at Friday's open, whether the unnamed "top three hyperscaler" is identified next year as promised, and the gap between core and GAAP margins as the fourth-quarter guide of roughly break-even core operating margin is tested.

Sources: Cerebras Q3 2026 earnings release (SEC EDGAR); CNBC; SEC EDGAR filings; Nasdaq quote data, which may be delayed. This is market information, not investment advice.